package com.itheima.service;

import com.itheima.common.BarChartData;
import com.itheima.common.PageBean;
import com.itheima.dtos.PageCustomerDto;
import com.itheima.pojo.Customer;

public interface CustomerService {
    //分页查
    PageBean<Customer> queryPage(PageCustomerDto pageCustomerDto);

    //会员年龄统计
    BarChartData queryCountGroupByAge();
}
